A 1.1-V regulator-stabilized 21.4-GHz VCO and a 115% frequency-range dynamic divider for k-band wireless communication

Takahiro Nakamura, Toru Masuda, Nobuhiro Shiramizu, Akihiro Nakamura, Katsuyoshi Washio

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A 21.4-GHz 1.1-V regulator-stabilized voltage-controlled oscillator (VCO) with a dual-transformer configuration and a 115% frequency-range dynamic dividerboth based on 0.18-μ m SiGe BiCMOS technologywere developed. As for the VCO, the combination of two types of transformers, which exhibit high input impedance and capacitive-input impedance, respectively, provides both wide frequency-tuning range and low phase noise. The measured phase noise of the VCO at a 1-MHz offset frequency is-109 dBc/Hz with 11.1-mW dc power dissipation (including the regulator). The figure of merit of the VCO is-192 dBc/Hz, which is the best value among 20-GHz-class silicon-based VCOs (to the best of the authors' knowledge). As for the divider, a two-stage single-balanced mixer reduces dc power and increases operation frequency range. The measured operation frequency of the divider is from 7 to 26 GHz while dissipating only 1.15-mW dc power and occupying a small area (0.004 mm 2). These performance results indicate that the proposed VCO and the divider are suitable for low-s-power transceivers of quasi-millimeter-wave wireless communication systems.

Original languageEnglish
Article number6246653
Pages (from-to)2823-2832
Number of pages10
JournalIEEE Transactions on Microwave Theory and Techniques
Volume60
Issue number9
DOIs
Publication statusPublished - 2012 Jul 27

Keywords

  • Dividers
  • SiGe BiCMOS
  • microwave and millimeter-wave circuits
  • transformers
  • voltage-controlled oscillator (VCO)

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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